The Highlanders were a race of ancient Irish invaders who lived in the northernmost regions of Scotland and seldom lived in the cities. As civilization in Britain moved forward, the Highlanders became the farmers and poor trade's people who struggled to eke out a very meager existence off the land. Many Americans are descendants of Highlanders, and yet many more descend from the Border and Lowland Scots who often have no clan affiliations of any sort.
The effects of the Scottish race on what we consider to be the American culture of today are virtually too numerous to mention. Often people confuse being Scottish with membership in a highland clan. The truth is that many if not most Scots have no affiliation with the ancient clans.